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vpp/test/test_dhcp6.py
Dave Wallace cf9356d642 tests: update scapy to version 2.4.5 
- Required for Ubuntu 24.04 LTS jobs
- temporarily disable TestIpsecEsp1 and
  TestIpsecAhAll tests until a patch can
  be added to fix them

Type: test

Change-Id: I1ae7b170117182c3252629bbbb770775e2c496c9
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2024-08-07 09:15:17 +00:00

841 lines
29 KiB
Python
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from socket import AF_INET6, inet_ntop, inet_pton
from scapy.layers.dhcp6 import (
DHCP6_Advertise,
DHCP6OptClientId,
DHCP6OptStatusCode,
DHCP6OptPref,
DHCP6OptIA_PD,
DHCP6OptIAPrefix,
DHCP6OptServerId,
DHCP6_Solicit,
DHCP6_Reply,
DHCP6_Request,
DHCP6_Renew,
DHCP6_Rebind,
DUID_LL,
DHCP6_Release,
DHCP6OptElapsedTime,
DHCP6OptIA_NA,
DHCP6OptIAAddress,
)
from scapy.layers.inet6 import IPv6, Ether, UDP
from framework import VppTestCase
from asfframework import tag_fixme_vpp_workers, tag_run_solo
from vpp_papi import VppEnum
from config import config
import util
import os
import unittest
def ip6_normalize(ip6):
return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6))
@unittest.skipIf("dhcp" in config.excluded_plugins, "Exclude DHCP plugin tests")
class TestDHCPv6DataPlane(VppTestCase):
"""DHCPv6 Data Plane Test Case"""
@classmethod
def setUpClass(cls):
super(TestDHCPv6DataPlane, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestDHCPv6DataPlane, cls).tearDownClass()
def setUp(self):
super(TestDHCPv6DataPlane, self).setUp()
self.create_pg_interfaces(range(1))
self.interfaces = list(self.pg_interfaces)
for i in self.interfaces:
i.admin_up()
i.config_ip6()
self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
def tearDown(self):
for i in self.interfaces:
i.unconfig_ip6()
i.admin_down()
super(TestDHCPv6DataPlane, self).tearDown()
def test_dhcp_ia_na_send_solicit_receive_advertise(self):
"""Verify DHCPv6 IA NA Solicit packet and Advertise event"""
self.vapi.dhcp6_clients_enable_disable(enable=1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
address = {"address": "1:2:3::5", "preferred_time": 60, "valid_time": 120}
self.vapi.dhcp6_send_client_message(
server_index=0xFFFFFFFF,
mrc=1,
msg_type=VppEnum.vl_api_dhcpv6_msg_type_t.DHCPV6_MSG_API_SOLICIT,
sw_if_index=self.pg0.sw_if_index,
T1=20,
T2=40,
addresses=[address],
n_addresses=len([address]),
)
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertEqual(packet.haslayer(IPv6), 1)
self.assertEqual(packet[IPv6].haslayer(DHCP6_Solicit), 1)
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_na = packet[DHCP6OptIA_NA]
self.assert_equal(ia_na.T1, 20)
self.assert_equal(ia_na.T2, 40)
self.assert_equal(len(ia_na.ianaopts), 1)
address = ia_na.ianaopts[0]
self.assert_equal(address.addr, "1:2:3::5")
self.assert_equal(address.preflft, 60)
self.assert_equal(address.validlft, 120)
self.vapi.want_dhcp6_reply_events(enable_disable=1, pid=os.getpid())
try:
ia_na_opts = DHCP6OptIAAddress(addr="7:8::2", preflft=60, validlft=120)
p = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IPv6(
src=util.mk_ll_addr(self.pg0.remote_mac), dst=self.pg0.local_ip6_ll
)
/ UDP(sport=547, dport=546)
/ DHCP6_Advertise(trid=trid)
/ DHCP6OptServerId(duid=self.server_duid)
/ DHCP6OptClientId(duid=client_duid)
/ DHCP6OptPref(prefval=7)
/ DHCP6OptStatusCode(statuscode=1)
/ DHCP6OptIA_NA(iaid=1, T1=20, T2=40, ianaopts=ia_na_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_address = ev.addresses[0]
address = ia_na_opts.getfieldval("addr")
self.assert_equal(str(reported_address.address), address)
self.assert_equal(
reported_address.preferred_time, ia_na_opts.getfieldval("preflft")
)
self.assert_equal(
reported_address.valid_time, ia_na_opts.getfieldval("validlft")
)
finally:
self.vapi.want_dhcp6_reply_events(enable_disable=0)
self.vapi.dhcp6_clients_enable_disable(enable=0)
def test_dhcp_pd_send_solicit_receive_advertise(self):
"""Verify DHCPv6 PD Solicit packet and Advertise event"""
self.vapi.dhcp6_clients_enable_disable(enable=1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
prefix = {
"prefix": {"address": "1:2:3::", "len": 50},
"preferred_time": 60,
"valid_time": 120,
}
prefixes = [prefix]
self.vapi.dhcp6_pd_send_client_message(
server_index=0xFFFFFFFF,
mrc=1,
msg_type=VppEnum.vl_api_dhcpv6_msg_type_t.DHCPV6_MSG_API_SOLICIT,
sw_if_index=self.pg0.sw_if_index,
T1=20,
T2=40,
prefixes=prefixes,
n_prefixes=len(prefixes),
)
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertEqual(packet.haslayer(IPv6), 1)
self.assertEqual(packet[IPv6].haslayer(DHCP6_Solicit), 1)
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_pd = packet[DHCP6OptIA_PD]
self.assert_equal(ia_pd.T1, 20)
self.assert_equal(ia_pd.T2, 40)
self.assert_equal(len(ia_pd.iapdopt), 1)
prefix = ia_pd.iapdopt[0]
self.assert_equal(prefix.prefix, "1:2:3::")
self.assert_equal(prefix.plen, 50)
self.assert_equal(prefix.preflft, 60)
self.assert_equal(prefix.validlft, 120)
self.vapi.want_dhcp6_pd_reply_events(enable_disable=1, pid=os.getpid())
try:
ia_pd_opts = DHCP6OptIAPrefix(
prefix="7:8::", plen=56, preflft=60, validlft=120
)
p = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IPv6(
src=util.mk_ll_addr(self.pg0.remote_mac), dst=self.pg0.local_ip6_ll
)
/ UDP(sport=547, dport=546)
/ DHCP6_Advertise(trid=trid)
/ DHCP6OptServerId(duid=self.server_duid)
/ DHCP6OptClientId(duid=client_duid)
/ DHCP6OptPref(prefval=7)
/ DHCP6OptStatusCode(statuscode=1)
/ DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_prefix = ev.prefixes[0]
prefix = ia_pd_opts.getfieldval("prefix")
self.assert_equal(str(reported_prefix.prefix).split("/")[0], prefix)
self.assert_equal(
int(str(reported_prefix.prefix).split("/")[1]),
ia_pd_opts.getfieldval("plen"),
)
self.assert_equal(
reported_prefix.preferred_time, ia_pd_opts.getfieldval("preflft")
)
self.assert_equal(
reported_prefix.valid_time, ia_pd_opts.getfieldval("validlft")
)
finally:
self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)
self.vapi.dhcp6_clients_enable_disable(enable=0)
@tag_run_solo
@unittest.skipIf("dhcp" in config.excluded_plugins, "Exclude DHCP plugin tests")
class TestDHCPv6IANAControlPlane(VppTestCase):
"""DHCPv6 IA NA Control Plane Test Case"""
@classmethod
def setUpClass(cls):
super(TestDHCPv6IANAControlPlane, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestDHCPv6IANAControlPlane, cls).tearDownClass()
def setUp(self):
super(TestDHCPv6IANAControlPlane, self).setUp()
self.create_pg_interfaces(range(1))
self.interfaces = list(self.pg_interfaces)
for i in self.interfaces:
i.admin_up()
self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
self.client_duid = None
self.T1 = 1
self.T2 = 2
fib = self.vapi.ip_route_dump(0, True)
self.initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.vapi.dhcp6_client_enable_disable(
sw_if_index=self.pg0.sw_if_index, enable=1
)
def tearDown(self):
self.vapi.dhcp6_client_enable_disable(
sw_if_index=self.pg0.sw_if_index, enable=0
)
for i in self.interfaces:
i.admin_down()
super(TestDHCPv6IANAControlPlane, self).tearDown()
@staticmethod
def get_interface_addresses(fib, pg):
lst = []
for entry in fib:
if entry.route.prefix.prefixlen == 128:
path = entry.route.paths[0]
if path.sw_if_index == pg.sw_if_index:
lst.append(str(entry.route.prefix.network_address))
return lst
def get_addresses(self):
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg0))
return addresses.difference(self.initial_addresses)
def validate_duid_ll(self, duid):
DUID_LL(bytes(duid))
def validate_packet(self, packet, msg_type, is_resend=False):
try:
self.assertEqual(packet.haslayer(msg_type), 1)
client_duid = packet[DHCP6OptClientId].duid
if self.client_duid is None:
self.client_duid = client_duid
self.validate_duid_ll(client_duid)
else:
self.assertEqual(self.client_duid, client_duid)
if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind:
server_duid = packet[DHCP6OptServerId].duid
self.assertEqual(server_duid, self.server_duid)
if is_resend:
self.assertEqual(self.trid, packet[msg_type].trid)
else:
self.trid = packet[msg_type].trid
ip = packet[IPv6]
udp = packet[UDP]
self.assertEqual(ip.dst, "ff02::1:2")
self.assertEqual(udp.sport, 546)
self.assertEqual(udp.dport, 547)
dhcpv6 = packet[msg_type]
elapsed_time = dhcpv6[DHCP6OptElapsedTime]
if is_resend:
self.assertNotEqual(elapsed_time.elapsedtime, 0)
else:
self.assertEqual(elapsed_time.elapsedtime, 0)
except BaseException:
packet.show()
raise
def wait_for_packet(self, msg_type, timeout=None, is_resend=False):
if timeout is None:
timeout = 3
rx_list = self.pg0.get_capture(1, timeout=timeout)
packet = rx_list[0]
self.validate_packet(packet, msg_type, is_resend=is_resend)
def wait_for_solicit(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend)
def wait_for_request(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend)
def wait_for_renew(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend)
def wait_for_rebind(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend)
def wait_for_release(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend)
def send_packet(self, msg_type, t1=None, t2=None, ianaopts=None):
if t1 is None:
t1 = self.T1
if t2 is None:
t2 = self.T2
if ianaopts is None:
opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2)
else:
opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2, ianaopts=ianaopts)
p = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IPv6(src=util.mk_ll_addr(self.pg0.remote_mac), dst=self.pg0.local_ip6_ll)
/ UDP(sport=547, dport=546)
/ msg_type(trid=self.trid)
/ DHCP6OptServerId(duid=self.server_duid)
/ DHCP6OptClientId(duid=self.client_duid)
/ opt_ia_na
)
self.pg0.add_stream([p])
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
def send_advertise(self, t1=None, t2=None, ianaopts=None):
self.send_packet(DHCP6_Advertise, t1, t2, ianaopts)
def send_reply(self, t1=None, t2=None, ianaopts=None):
self.send_packet(DHCP6_Reply, t1, t2, ianaopts)
def test_T1_and_T2_timeouts(self):
"""Test T1 and T2 timeouts"""
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
self.send_reply()
self.sleep(1)
self.wait_for_renew()
self.pg_enable_capture(self.pg_interfaces)
self.sleep(1)
self.wait_for_rebind()
def test_addresses(self):
"""Test handling of addresses"""
ia_na_opts = DHCP6OptIAAddress(addr="7:8::2", preflft=1, validlft=2)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, ianaopts=ia_na_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, ianaopts=ia_na_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(addr, "7:8::2")
self.sleep(2)
# check that the address is deleted
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg0))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
def test_sending_client_messages_solicit(self):
"""VPP receives messages from DHCPv6 client"""
self.wait_for_solicit()
self.send_packet(DHCP6_Solicit)
self.send_packet(DHCP6_Request)
self.send_packet(DHCP6_Renew)
self.send_packet(DHCP6_Rebind)
self.sleep(1)
self.wait_for_solicit(is_resend=True)
def test_sending_inappropriate_packets(self):
"""Server sends messages with inappropriate message types"""
self.wait_for_solicit()
self.send_reply()
self.wait_for_solicit(is_resend=True)
self.send_advertise()
self.wait_for_request()
self.send_advertise()
self.wait_for_request(is_resend=True)
self.send_reply()
self.wait_for_renew()
def test_no_address_available_in_advertise(self):
"""Advertise message contains NoAddrsAvail status code"""
self.wait_for_solicit()
noavail = DHCP6OptStatusCode(statuscode=2) # NoAddrsAvail
self.send_advertise(ianaopts=noavail)
self.wait_for_solicit(is_resend=True)
def test_preferred_greater_than_valid_lifetime(self):
"""Preferred lifetime is greater than valid lifetime"""
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
ia_na_opts = DHCP6OptIAAddress(addr="7:8::2", preflft=4, validlft=3)
self.send_reply(ianaopts=ia_na_opts)
self.sleep(0.5)
# check FIB contains no addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg0))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
def test_T1_greater_than_T2(self):
"""T1 is greater than T2"""
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
ia_na_opts = DHCP6OptIAAddress(addr="7:8::2", preflft=4, validlft=8)
self.send_reply(t1=80, t2=40, ianaopts=ia_na_opts)
self.sleep(0.5)
# check FIB contains no addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg0))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
@tag_fixme_vpp_workers
@unittest.skipIf("dhcp" in config.excluded_plugins, "Exclude DHCP plugin tests")
class TestDHCPv6PDControlPlane(VppTestCase):
"""DHCPv6 PD Control Plane Test Case"""
@classmethod
def setUpClass(cls):
super(TestDHCPv6PDControlPlane, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestDHCPv6PDControlPlane, cls).tearDownClass()
def setUp(self):
super(TestDHCPv6PDControlPlane, self).setUp()
self.create_pg_interfaces(range(2))
self.interfaces = list(self.pg_interfaces)
for i in self.interfaces:
i.admin_up()
self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
self.client_duid = None
self.T1 = 1
self.T2 = 2
fib = self.vapi.ip_route_dump(0, True)
self.initial_addresses = set(self.get_interface_addresses(fib, self.pg1))
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.prefix_group = "my-pd-prefix-group"
self.vapi.dhcp6_pd_client_enable_disable(
enable=1, sw_if_index=self.pg0.sw_if_index, prefix_group=self.prefix_group
)
def tearDown(self):
self.vapi.dhcp6_pd_client_enable_disable(self.pg0.sw_if_index, enable=0)
for i in self.interfaces:
i.admin_down()
super(TestDHCPv6PDControlPlane, self).tearDown()
@staticmethod
def get_interface_addresses(fib, pg):
lst = []
for entry in fib:
if entry.route.prefix.prefixlen == 128:
path = entry.route.paths[0]
if path.sw_if_index == pg.sw_if_index:
lst.append(str(entry.route.prefix.network_address))
return lst
def get_addresses(self):
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
return addresses.difference(self.initial_addresses)
def validate_duid_ll(self, duid):
DUID_LL(bytes(duid))
def validate_packet(self, packet, msg_type, is_resend=False):
try:
self.assertEqual(packet.haslayer(msg_type), 1)
client_duid = packet[DHCP6OptClientId].duid
if self.client_duid is None:
self.client_duid = client_duid
self.validate_duid_ll(client_duid)
else:
self.assertEqual(self.client_duid, client_duid)
if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind:
server_duid = packet[DHCP6OptServerId].duid
self.assertEqual(server_duid, self.server_duid)
if is_resend:
self.assertEqual(self.trid, packet[msg_type].trid)
else:
self.trid = packet[msg_type].trid
ip = packet[IPv6]
udp = packet[UDP]
self.assertEqual(ip.dst, "ff02::1:2")
self.assertEqual(udp.sport, 546)
self.assertEqual(udp.dport, 547)
dhcpv6 = packet[msg_type]
elapsed_time = dhcpv6[DHCP6OptElapsedTime]
if is_resend:
self.assertNotEqual(elapsed_time.elapsedtime, 0)
else:
self.assertEqual(elapsed_time.elapsedtime, 0)
except BaseException:
packet.show()
raise
def wait_for_packet(self, msg_type, timeout=None, is_resend=False):
if timeout is None:
timeout = 3
rx_list = self.pg0.get_capture(1, timeout=timeout)
packet = rx_list[0]
self.validate_packet(packet, msg_type, is_resend=is_resend)
def wait_for_solicit(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend)
def wait_for_request(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend)
def wait_for_renew(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend)
def wait_for_rebind(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend)
def wait_for_release(self, timeout=None, is_resend=False):
self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend)
def send_packet(self, msg_type, t1=None, t2=None, iapdopt=None):
if t1 is None:
t1 = self.T1
if t2 is None:
t2 = self.T2
if iapdopt is None:
opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2)
else:
opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2, iapdopt=iapdopt)
p = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IPv6(src=util.mk_ll_addr(self.pg0.remote_mac), dst=self.pg0.local_ip6_ll)
/ UDP(sport=547, dport=546)
/ msg_type(trid=self.trid)
/ DHCP6OptServerId(duid=self.server_duid)
/ DHCP6OptClientId(duid=self.client_duid)
/ opt_ia_pd
)
self.pg0.add_stream([p])
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
def send_advertise(self, t1=None, t2=None, iapdopt=None):
self.send_packet(DHCP6_Advertise, t1, t2, iapdopt)
def send_reply(self, t1=None, t2=None, iapdopt=None):
self.send_packet(DHCP6_Reply, t1, t2, iapdopt)
def test_T1_and_T2_timeouts(self):
"""Test T1 and T2 timeouts"""
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
self.send_reply()
self.sleep(1)
self.wait_for_renew()
self.pg_enable_capture(self.pg_interfaces)
self.sleep(1)
self.wait_for_rebind()
def test_prefixes(self):
"""Test handling of prefixes"""
address1 = "::2:0:0:0:405/60"
address2 = "::76:0:0:0:406/62"
try:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
)
ia_pd_opts = DHCP6OptIAPrefix(
prefix="7:8::", plen=56, preflft=2, validlft=3
)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, iapdopt=ia_pd_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(addr, "7:8:0:2::405")
self.sleep(1)
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address2,
prefix_group=self.prefix_group,
)
self.sleep(1)
# check FIB contains 2 addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 2)
addr1 = list(new_addresses)[0]
addr2 = list(new_addresses)[1]
if addr1 == "7:8:0:76::406":
addr1, addr2 = addr2, addr1
self.assertEqual(addr1, "7:8:0:2::405")
self.assertEqual(addr2, "7:8:0:76::406")
self.sleep(1)
# check that the addresses are deleted
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
if address1 is not None:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
is_add=0,
)
if address2 is not None:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address2,
prefix_group=self.prefix_group,
is_add=0,
)
def test_sending_client_messages_solicit(self):
"""VPP receives messages from DHCPv6 client"""
self.wait_for_solicit()
self.send_packet(DHCP6_Solicit)
self.send_packet(DHCP6_Request)
self.send_packet(DHCP6_Renew)
self.send_packet(DHCP6_Rebind)
self.sleep(1)
self.wait_for_solicit(is_resend=True)
def test_sending_inappropriate_packets(self):
"""Server sends messages with inappropriate message types"""
self.wait_for_solicit()
self.send_reply()
self.wait_for_solicit(is_resend=True)
self.send_advertise()
self.wait_for_request()
self.send_advertise()
self.wait_for_request(is_resend=True)
self.send_reply()
self.wait_for_renew()
def test_no_prefix_available_in_advertise(self):
"""Advertise message contains NoPrefixAvail status code"""
self.wait_for_solicit()
noavail = DHCP6OptStatusCode(statuscode=6) # NoPrefixAvail
self.send_advertise(iapdopt=noavail)
self.wait_for_solicit(is_resend=True)
def test_preferred_greater_than_valid_lifetime(self):
"""Preferred lifetime is greater than valid lifetime"""
address1 = "::2:0:0:0:405/60"
try:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
)
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
ia_pd_opts = DHCP6OptIAPrefix(
prefix="7:8::", plen=56, preflft=4, validlft=3
)
self.send_reply(iapdopt=ia_pd_opts)
self.sleep(0.5)
# check FIB contains no addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
is_add=0,
)
def test_T1_greater_than_T2(self):
"""T1 is greater than T2"""
address1 = "::2:0:0:0:405/60"
try:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
address_with_prefix=address1,
prefix_group=self.prefix_group,
)
self.wait_for_solicit()
self.send_advertise()
self.wait_for_request()
ia_pd_opts = DHCP6OptIAPrefix(
prefix="7:8::", plen=56, preflft=4, validlft=8
)
self.send_reply(t1=80, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.5)
# check FIB contains no addresses
fib = self.vapi.ip_route_dump(0, True)
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
self.vapi.ip6_add_del_address_using_prefix(
sw_if_index=self.pg1.sw_if_index,
prefix_group=self.prefix_group,
address_with_prefix=address1,
is_add=False,
)
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